Add 15/9 and 8/56, Solve 1 6/9 + 8/56 as a fraction

Add 15/9 and 8/56

1^st number: 1 6/9, 2^nd number: 8/56

15/9 + 8/56 is 38/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 56 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 9 × 56 = 504,
15/9 = 15 × 56/9 × 56 = 840/504
Likewise, for the 2nd fraction, since 56 × 9 = 504,
8/56 = 8 × 9/56 × 9 = 72/504
Add the two like fractions:
840/504 + 72/504 = 840 + 72/504 = 912/504
912/504 simplified gives 38/21
So, 15/9 + 8/56 = 38/21
In mixed form: 117/21

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad